Blast!
Once again, Cassidy's use of pedantic pomposity to impress an audience of mining professionals brings meaning to my existence. I can once again provide enlightenment to the many others! A press release "Cassidy Gold resumes drilling at Kouroussa property dated 2005-10-12 12:39 ET" provides welcome news.
It says Cassidy Gold Corp. has contracted Australian firm RGS Global to provide on-site management and consulting services at Kouroussa. This should help to direct information gathering that will result in early reserves determination. West African Drilling Services (WADS) is contracted to provide three drill rigs. Boart Longyear will supply one core rig. Now brace for the blast! It tells that "RAB" drilling is planned for a number of localities. RAB is not a disease, but it does cause me to foam at the mouth because the report fails to explain that RAB means "Rotary Air Blast" drilling.
As my old friend Edith Josie used to say in her reports from Old Crow in Yukon, "here are the news". Why does one go RAB? RAB drilling is the cheapest type of drilling used in the Goldfields. It makes use of compressed air (or a mixture of compressed air and water) to break the ground. Compressed air is pumped down the hole through a drill pipe, and the cuttings are blown up the hole along the space between the drill pipe and the wall of the hole. The cuttings
are laid in distinct mounds (each representing 1 or 2 m of drilling), and then described, identified, sampled and analysed. Typically, the cost comparison or RAB drilling was in the order of about $6/m in program when RC drilling was in the order of $30 - $35/m for the first 100 m of drilling and 442 - $44/m from 100 to 200 m in depth. Diamond drilling was the most expensive, of the order of $75 - $100/m. Core drill recovery of whole samples of rocks (not just chips) allows positive identification of rock type and 3-dimensional assessment of the lateral extent and depth of an orebody. It's worth the money! RAB drilling has been employed very successfully as a
principal exploration tool in similar conditions in Australia, other parts of West Africa and in Central Africa where it is responsible for several major gold discoveries in areas that are the same as exist in Guinea. This is, areas with a regolith composed of saprolites with a crust of dura. RAB results are not as precise as RC or core. Mixing of sample is caused in RAB by collissions between the cuttings and the sides of the hole but the process provides a great exploration process for determining priority of use of the more expensive technologies. Let me explain.
We all know how wealthy western Canada is as result of the oil reserves. Once, long ago, at Esso, I participated in a statistical study that determined that you would have found about 89% of all the then known prairie oil reserves if you had started at the extreme southeast corner of Sask. and drilled holes to the basement rock in every section fifteen of every township and worked your way systematically, northwest. You didn't need any geologists, etc. in that case. But you would have spent more than 1000 times the value of all the reserves found because of your dry hole costs. Finding the Turner Valley field early, and then years later, Leduc, created the economic success. The RAB results will allow Cassidy's RC and core rig work to be better directed at targets that matter in more timely fashion. The lower costs of RAB exploration means that more will be done.
Shareholders rejoice! Three evaluation rigs and one explorer rig will be at work this season! As well, Cassidy will fly an aeromag/radiometric survey, create a geophoto interpretation base and do more soil geochem hunting in the Termitoria. Those busy little termites, the (Macrotermes and possibly even the Odontotermes have been busy carrying gold bearing soil from the depths to extend and repair their termite mounds.
All this human activity will combine to show sooner and much more credibly the enormously greater potential indicated to exist on Cassidy's holdings. the end of the news.
Disclosure Statement: Ed Zederayko is a shareholder of Cassidy Gold. He is not an insider of the corporation.
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